Android do not launch activity when app is running (on IntentFilter match)

Question

I am working on USB device connection. Here my Android phone will work on HOST mode.

I Have specified Intent filter in manifest like:

    <activity android:name=".TestActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
    <intent-filter>
        <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
    </intent-filter>

    <meta-data
        android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
        android:resource="@xml/device_filter" />
    </activity>

so whenever my device will connect it will show the popup for USB permission and Launch the TestActivity.

But if My app is running and i am in other activity then also it is launching test activity.

Here I want to avoid launch activity again if my app is already running. Is it possible?

Thanks

score 0 · Answer 1 · answered Jan 17 '18 at 06:20

0

Use BroadcastReceiver for USB_DEVICE_ATTACHED

and in onReceive() Use this

answered Jan 17 '18 at 06:20

Bhavesh Desai

753
4
20

if I insert USB hardware again then it should not ask user permission to use this hardware. Android will remember hardware. – Parth Jan 17 '18 at 06:30

score 0 · Accepted Answer · answered Jan 18 '18 at 08:44

Here I have the workaround for this. here Intent is registered to the activity so activity will launch definitely on hardware connection( ie: on receive of this action <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />)

Create activity without setting layout and add finish on create.if you want to get device detail then you can get from here.

onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    UsbDevice device = (UsbDevice)getIntent().getParcelableExtra(UsbManager.EXTRA_DEVICE);
    finish();
}

Manifest file add set theme for your activity (here TestActivity)

android:theme="@android:style/Theme.NoDisplay"

Android do not launch activity when app is running (on IntentFilter match)

2 Answers2